Experimental Study on Dynamic Deformation of Residual Soil under Cyclic Loading
YIN Song 1, KONG Ling-wei 1, YANG Ai-Wu2, MU Kun1, WANG Tao2
1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;
2. Key Laboratory of Soft Soil Characteristics and Engineering Environment of Tianjin, Tianjin 300381
In order to research the deformation characteristics of compacted residual soil under cyclic loading, dynamic triaxial test on the compacted residual soil of different moisture contents, confining pressures and amplitude conditions was conducted. The hysteresis back curve, development law of cumulative plastic strain and skeleton curve of the soil under different physical and mechanical conditions were obtained. The decay law of dynamic elastic modulus with strain was analyzed. The influences of moisture content, confining pressure and amplitude on the test results were explored. The results show that the deformation of compacted residual soil increased significantly as σd increased when the cumulative plastic strain reaches a certain value, but the final performance of deformation was elastic stability behavior. This characteristic decreased gradually with water content increasing. The increasing water content was not conducive to the deformation stability of the soil and the increasing confining pressure can inhibit the trend. In addition, the increasing water content would result in a quick damping of modulus and the decrease of residual modulus. The influence of confining pressure on the decay law of modulus decreased gradually with the strain increasing. This study may provide technical reference for the construction process of granite residual soil as embankment filling and soil conditioning.
尹松1，孔令伟1，杨爱武2，穆坤1，王韬2. 循环振动作用下残积土动力变形特性试验研究[J]. 振动与冲击, 2017, 36(11): 224-231.
YIN Song 1, KONG Ling-wei 1, YANG Ai-Wu2, MU Kun1, WANG Tao2. Experimental Study on Dynamic Deformation of Residual Soil under Cyclic Loading. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(11): 224-231.
[1] 张先伟, 孔令伟, 臧濛. 雷州半岛玄武岩残积土的工程地质特性研究[J]. 岩土工程学报,2014, 36(5): 855-863.
ZHANG Xian-wei, KONG Ling-wei, ZANG Meng. Engineering geological characteristics of basalt residual soils in Leizhou Peninsula[J]. Geotechnical Engineering, 2014,36(5):855-863. [2] 尹松, 孔令伟, 张先伟, HossainMdSayem, 樊友杰. 基于自钻式旁压仪的残积土原位力学特性试验研究[J/OL].岩土工程学报, http://www.cnki.net/kcms/detail/32.1124.TU.
20150825.1038. 004.html.
YIN Song, KONG Ling-wei, ZHANG Xian-wei, Hossain Md Sayem, FAN You-jie. Experimental study on the in-situ properties of residual soil by self-boring pressuremeter [J]. Geotechnical Engineering, http://www. cnki.net/kcms/detail /32.1124. TU.20150825.1038.004.html.
[3] 李剑, 陈善雄, 姜领发,等. 应力历史对重塑红黏土动力特性影响的试验研究[J]. 岩土工程学报, 2014(09):1657-1665.
LI Jian, CHEN Shan-xiong, JIANG Ling-fa, XIONG Shu-dan. Experimental study on influence of stress history on dynamic properties of remolded red clay[J]. Geotechnical Engineering, 2014(09):1657-1665.
[4] Taha M R, Kabir M H. Tropical residual soil as compacted soil liners[J]. Environmental Geology, 2005, 47(3):375-381.
[5] Rao S M, Revanasiddappa K. Influence of Cyclic Wetting Drying on Collapse Behaviour of Compacted Residual Soil[J]. Geotechnical & Geological Engineering, 2006, 24(3):725-734.
[6] 李志勇, 曹新文, 谢强. 全风化花岗岩的路用动态特性研究[J]. 岩土力学, 2006, 27(12):2269-2272.
LI Zhi-yong, CAO Xin-wen, XIE Qiang. Test study of dynamic characteristics of granitic residual soil for highway subgrade[J]. Rock and Soil Mechanics, 2006, 27(12):2269-2272.
[7] 周德泉, 谭焕杰, 徐一鸣,等. 循环荷载作用下花岗岩残积土累积变形与湿化特性试验研究[J]. 中南大学学报：自然科学版, 2013, 44(4):1657-1665.
ZHOU Dequan, TAN Huanjie, XU Yiming, et al. Indoor experimental study for accumulative and wetting deformation of granite residual soil under cyclic loading[J]. Journal of Central South University (Science and Technology), 2013, 44(4): 1657－1665.
[8] 钱建固, 王永刚, 张甲峰,等. 交通动载下饱和软黏土累积变形的不排水循环扭剪试验[J]. 岩土工程学报, 2013(10):1790-1798.
QIAN Jian-gu1, WANG Yong-gang, ZHANG Jia-feng, et al. Undrained cyclic torsion shear tests on permanent deformation responses of soft saturated clay to traffic loadings[J]. Geotechnical Engineering, 2013(10):1790-1798.
[9] 王晅, 张家生, 杨果岳,等. 重载作用下公路路基及基层动应力测试研究[J]. 振动与冲击, 2007, 26(6):169-173.
WANG Xuan，Zhang Jia-shen，YANG Guo-yue，et al． Test
study on the dynamic stress in roadbed and grass-roots of highway under heavy load[J]． Journal of Vibration and Shock, 2007, 26(6):169-173．
[10] 冷伍明, 刘文稢, 周文权. 振动荷载作用下重载铁路路基粗颗粒土填料临界动应力试验研究[J]. 振动与冲击, 2015, 34(16):25-30.
LENG Wu-ming, LIU Wen-jie, ZHOU Wen-quan. Testing research on critical cyclical stress of coarse-grained soil filling in heavy haul railway subgrade) [J]. Journal of Vibration and Shock, 2015, 34(16):25-30.
[11] 张勇, 孔令伟, 郭爱国,等. 循环荷载下饱和软黏土的累积塑性应变试验研究[J]. 岩土力学, 2009, 30(06):1542-1548.
ZHANG Yong，KONG Lingwei，GUO Aiguo，et al. Cumulative plastic strain of saturated soft clay under cyclic loading[J]. Rock and Soil Mechanics, 2009，30(6): 1542-1548.
[12] 谢定义. 土动力学[M]. 西安: 西安交通大学出版社, 1988.
XIE Ding-yi. Soil dynamics[M]. Beijing: Higher Education Press, 1988.
